Hi Lisa,
As a suggestion, discuss this with your doctor but maybe he can try alternating doses of the synthroid. I go up and down with the synthroid and what seems to work with my body is an odd dosage that synthroid doesn’t make in tablet form. I actually need a dose in between .175 and .200mg that seems to now be working. It has been about 7 years post RAI for me and I still need fine tuning every now and then.
Hope you feel better soon.
Dee